In the US, all cars sold new after January 1, 1996 were required to be OBD
II compliant, and the connectors are all OBD II connectors. More recently a
second standard, CAN, has come out for communicating with other controllers
in the car but OBD II is still there. An OBD II reader connected to the
access connector near the driver's knees will still yield all the mandatory
emissions info. As to analog values like sensor numbers, I don't know. Those
definitely are not available on the pre-OBD II cars and I have doubts about
the '96-'98 cars, too.

For the pre-'96 Hondas, check out
http://www.iequus.com/assets/manuals/3173_ICCR_E_14JAN03.pdf
for instructions. Note that anywhere they talk about a "reader" it is a
simple jumper that shorts the two connector pins. (I should know - I bought
the $35 kit that consisted of the manual, two different shaped jumpers -the
other is for Toyotas - and a plastic screwdriver for Nissans.) In each case,
the procedure only reports stored codes and the manual provides instructions
for clearing them.

Mike

DID U EVER GET ANY INFO ON THAT PROB. MY HONDA TURNS ON BUT DOESNT STAY ON.
A COMPLETE TUNE UP HAS ALREADY BEEN DONE FUSES CHECKED AND ROTOR AND CAP
LOOK GOOD.